I bought two of these to fit in the space we had designated for them. I purchased a four cube shelving unit and a six cube shelving unit. The seller offers this unit in three, four, and six cubes. The units' width worked out perfectly for our setup based on the distance from the wall. We can fit a diaper changing pad on top due to that distance, so now it doubles as a changing station! The shelves are particleboard, so assemble them with caution, aka don't take your building frustration out on them like I did or they will end up damaged!
Since it is particleboard, do not expect this thing to be sturdy. It sways when you push it side to side. We knew this would be centered right up against two large bookcases that are bolted into the studs of our wall, so the flimsiness would no longer be an issue. Once we got it wedged between the two bookshelves, it was safe for the kids to be around.
Please read all assembly instructions and research on safety measures to take before installing this in your home if you have little ones. I entertained the idea of doing a custom built-in for our playroom but decided against that for several reasons. It was expensive and would limit what we could do with this room in the future. By combining all these shelving units, I was able to get the exact look I wanted for a very reasonable price!